Home / 13,291.16-19,930.74-3,927.90

Finding the Fourth Proportional to 13,291.16, 19,930.74 and 3,927.90

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Solution

The fourth proportional to 13,291.16, 19,930.74 and 3,927.90 is: 5,890.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,291.16 : 19,930.74 = 3,927.90 : x
  2. Step 2: Convert to fraction form
    13,291.16/19,930.74 = 3,927.90/x
  3. Step 3: Cross multiply
    13,291.16x = 19,930.74 × 3,927.90
  4. Step 4: Simplify right side
    13,291.16x = 78,285,953.65
  5. Step 5: Solve for x
    x = 78,285,953.65/13,291.16
  6. Step 6: Final answer
    x = 5,890.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.